4WRKE16W6-125L-3X/6EG24K31/A5D3M

The 4WRKE16W6-125L-3X/6EG24K31/A5D3M valve belongs to the 4WRKE Directional Valves series from Bosch Rexroth and is applied in hydraulic automation to meter flow and switch actuator ports under electronic control. It is supplied in nominal size 16, allowing installation on standard manifold cavities, and follows the ISO 4401-07-06-0-94 porting pattern so existing subplates can be reused. At a 10-bar pressure drop the valve delivers a nominal flow of 125 L/min, providing ample oil volume for medium-power cylinders, while a maximum operating pressure of 350 bar on ports p, a, and b enables high-force motion sequences. The return line may rise to 250 bar without damage, preventing cavitation during overruns. An IP65 housing shields the spool and electronics from dust and wash-down sprays for reliable service near machining centers. The main stage must receive oil filtered to ISO 4406 cleanliness class 20/18/15 to keep the precision edges free of abrasive wear. With a mass of 11.2 kg, the assembly mounts directly on manifolds without external supports and keeps inertia low in modular machine frames.

The integrated amplifier runs from a 24 V DC supply, matching typical control cabinets, and the DC rating eases use on mobile hydraulic power packs. A ±10 V analog input commands spool position, giving proportional flow control, and an enable signal between 4 V and 24 V lets safety relays disable the valve during servicing. Coil current is limited to 1.5 A, which balances magnetic force with manageable winding temperature, and the electrical section draws no more than 72 W so power supplies can be sized accurately. Flow repeatability is supported by hysteresis not exceeding 1 %, maintaining stable actuator speeds in closed-loop systems. The analog signal type integrates with standard PLC output modules, and overall power handling, control range, and precision make the valve suitable for coordinated motion in presses, injection molds, and test stands.